تأثير استخدام وقود الهيدروجين في محرك الاحتراق الداخلي على تحسين كفاءة محرك الاشتعال بالشرارة

sarmad A. Jassem; Rafid M. Hanoon

doi:10.52716/jprs.v15i4.983

Authors

sarmad A. Jassem قسم الهندسة الميكانيكية/جامعة ذي قار
Rafid M. Hanoon قسم الهندسة الميكانيكية/ جامعة ذي قار

DOI:

https://doi.org/10.52716/jprs.v15i4.983

Keywords:

CI_engine , Engine performance, Hydrogen fuel, gasoline fuel

Abstract

The rise in concern over the health and environmental consequences of emissions from transportation, industry, and other utilities has led to a growing interest in alternative fuels. Hydrogen gas, a prospective substitute fuel for internal combustion engines, has the capability to enhance engine efficiency and diminish fuel usage and emissions. Petrol was employed in one phase, while hydrogen (H₂) and benzene were utilized in the other phase to assess the performance of the test engine. The flow rate of hydrogen gas was adjusted to 0.1 and 0.2 liters per minute (LPM). The two models underwent testing at engine speeds of 2000 and 2250 rpm, with varying engine loads (0, 2, 4, 6, 8, 10, and 12 N.m) and compression ratios (6:1, 7:1, and 9:1). The initial trials involved a comparison between pure petrol and dual fuel. The laboratory has achieved numerous exceptional test outcomes. Dual fuel operation at 2000 rpm resulted in a significant improvement in brake thermal efficiency, with an increase of 9.5% and 10.6%. The specific fuel consumption had a reduction of 11.3% and 14.1%, although the volumetric efficiency marginally fell, varying between 1.9% and 2.6%. The brakes achieved thermal efficiencies of 9.6% and 10.7%, resulting in a drop in specific fuel consumption of 11.4% and 14.3%. The volumetric efficiency experienced a minor decrease, ranging between 2.2% and 2.5% at 2250 rpm. Additionally, lower exhaust gas temperatures were observed at each test site. This has demonstrated that hydrogen fuel is a cost-efficient substitute for conventional petrol, without requiring any modifications to the engine. This has significant economic importance.

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